EP3519222A1 - Antriebsvorrichtung für eine fahrzeugachse, insbesondere hinterachse - Google Patents
Antriebsvorrichtung für eine fahrzeugachse, insbesondere hinterachseInfo
- Publication number
- EP3519222A1 EP3519222A1 EP17751658.0A EP17751658A EP3519222A1 EP 3519222 A1 EP3519222 A1 EP 3519222A1 EP 17751658 A EP17751658 A EP 17751658A EP 3519222 A1 EP3519222 A1 EP 3519222A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electric machine
- switching element
- vehicle
- drive device
- shafts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/02—Arrangement or mounting of electrical propulsion units comprising more than one electric motor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/02—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of clutch
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location or kind of gearing
- B60K17/043—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location or kind of gearing
- B60K17/043—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel
- B60K17/046—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel with planetary gearing having orbital motion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location or kind of gearing
- B60K17/06—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location or kind of gearing of change-speed gearing
- B60K17/08—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location or kind of gearing of change-speed gearing of mechanical type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location or kind of gearing
- B60K17/16—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location or kind of gearing of differential gearing
- B60K17/165—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location or kind of gearing of differential gearing provided between independent half axles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/34—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles
- B60K17/354—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having separate mechanical assemblies for transmitting drive to the front or to the rear wheels or set of wheels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/34—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles
- B60K17/356—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having fluid or electric motor, for driving one or more wheels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
- B60L15/2054—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed by controlling transmissions or clutches
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2220/00—Electrical machine types; Structures or applications thereof
- B60L2220/40—Electrical machine applications
- B60L2220/42—Electrical machine applications with use of more than one motor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2220/00—Electrical machine types; Structures or applications thereof
- B60L2220/40—Electrical machine applications
- B60L2220/46—Wheel motors, i.e. motor connected to only one wheel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/90—Vehicles comprising electric prime movers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/90—Vehicles comprising electric prime movers
- B60Y2200/91—Electric vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2400/00—Special features of vehicle units
- B60Y2400/42—Clutches or brakes
- B60Y2400/424—Friction clutches
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2400/00—Special features of vehicle units
- B60Y2400/42—Clutches or brakes
- B60Y2400/427—One-way clutches
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2400/00—Special features of vehicle units
- B60Y2400/70—Gearings
- B60Y2400/73—Planetary gearings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2400/00—Special features of vehicle units
- B60Y2400/80—Differentials
- B60Y2400/804—Torque vectoring arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/36—Differential gearings characterised by intentionally generating speed difference between outputs
- F16H2048/364—Differential gearings characterised by intentionally generating speed difference between outputs using electric or hydraulic motors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
Definitions
- the invention relates to a drive device for a vehicle axle, in particular rear axle, of a two-lane vehicle with electric drive according to the preamble of patent claim 1.
- the electrically driven front axle may comprise an electric machine, which is arranged, for example, axially parallel to the, guided to the vehicle wheels flange shafts.
- the front axle may have a spur gear, with which the electric machine shaft is drivingly connected to an axle differential positioned between the two stub shafts.
- the axle differential drives the two flange shafts leading to the vehicle wheels.
- two electric machines can be installed, each associated with a vehicle wheel of the rear axle. Their electric machine shafts can be connected in a generic drive device via a first switching element and a first transmission stage (spur gear) with the first flange threshold.
- the second electric machine via a second translation stage (spur gear) and a second switching element with the second flange threshold in conjunction.
- each of the two electric machines wheel-selectively drives a respective vehicle wheel, so that no axle differential is required with which a torque distribution between the vehicle wheels can take place.
- the two electric machines drive the vehicle wheels with equally large drive torques when driving straight ahead.
- the driving behavior can be supported by a torque redistribution (torque vectoring or cross-locking function).
- torque vectoring torque vectoring
- cross-locking function the driving behavior can be supported by a torque redistribution.
- a drive torque can be shifted to the outside vehicle wheel (torque vectoring).
- the drive torque can be shifted to the inside of the vehicle wheel (transverse lock function). This torque shift takes place in the above-mentioned rear axle by appropriate control of the first and second electric machines.
- a powertrain of an electric vehicle with two electric machines is known.
- a rear axle of the vehicle has a differential and the two electric machines, which are coupled via a gear and work individually or together.
- DE 10 201 1 086 062 A1 an electrified drive arrangement for a hybrid vehicle is known in which two electric machines are arranged on the rear axle of the hybrid vehicle and are connected via a differential gear and coupling elements with multi-stage transmission.
- DE10 201 1 004 410 A1 a hybrid drive unit for a motor vehicle is known in which an electric machine is connected via a multi-stage planetary gear with a differential of a rear axle.
- the object of the invention is to provide a drive device for an electrically driven vehicle axle, in which by simple means a functional extension is made possible, with a small space requirement and increased driving dynamics.
- the first and second electric machines are respectively connected via a first and a second shifting element to the first and second stub shafts respectively leading to a vehicle wheel.
- the first and second shift elements are closed, the drive torque generated in the two electric machines is driven off directly via the first and second shift elements onto the stub shafts of the vehicle wheels, namely wheel-selectively without the interposition of an additional axle differential.
- the above vehicle axle additionally has an axle differential, which on the output side abrades on the stub shafts of the vehicle wheels and on the input side via a third and a fourth switching element is drivingly connected to the first and the second electric machine shaft.
- the third and fourth switching elements are closed.
- the first and the second electric machine shaft can drive off on the two stub shafts via the third and fourth shifting element as well as the axle differential.
- switched second gear the first and the second switching elements are open.
- a wheel-selective drive takes place, in which a first torque flow is transmitted from the first electric machine via the first switching element to the first flange shaft.
- a second momentary flux is transmitted from the second electric machine via the second switching element to the second flange threshold.
- the first to fourth switching elements can be performed power switchable.
- the first and second shift elements may be one-way clutches, while the third and fourth shift elements are designed as multi-plate clutches.
- the axle differential can be a bevel differential or a spur gear differential or a planetary gear ifference. Usually, the axle differential is designed so that an equally large drive torque distribution takes place on the leading away from it first flange and second flange.
- a torque redistribution (that is, a torque vectoring or a cross-lock function) can be realized both in the first gear ratio and the second gear ratio as follows:
- the first gear ratio is shifted (that is, the first and second shift elements are closed )
- the third or fourth switching element are closed.
- the drive torque generated by the first or second electric machine is divided into a partial drive torque, which is transmitted via the first / second shift element directly to the first / second stub shaft, and in a partial drive torque, via the third / fourth switching element to the axle differential is transferred and divided evenly from there to the left and right vehicle wheel.
- the torque redistribution is realized as follows:
- the first or second switching element for the torque redistribution can be closed at least for a short time.
- the drive torque generated by the first or second electric machine is divided into a partial drive torque, which is transmitted via the first or second switching element directly to the first or second stub shaft, and in a partial drive torque, via the third or fourth switching element to the axle differential is transmitted and divided equally between the left and right vehicle wheels.
- the first and second electric machine shafts may preferably be connected to the first and second stub shafts via at least a first gear stage and a second gear stage (preferably spur gear stages).
- the first and the second electric machine shaft can be coupled via the third and the fourth switching element in each case with at least one intermediate shaft, which drives off via a third gear stage on the Achsdifferenzi- input side.
- the first and second electric machine shafts may be positioned in an axis-parallel arrangement with the first and second stub shafts coaxial with each other and defining a wheel axle of the vehicle wheels.
- the first and second electric machines may be mirror-inverted with respect to a vehicle center longitudinal plane, with the electric machine shafts converging toward each other in the vehicle transverse direction.
- the first and the second gear stage that is, preferably spur gears, may be arranged in the vehicle transverse direction within the two electric machines.
- a space can be provided in which the third and the fourth switching element and the axle differential can be positioned in a space-saving manner.
- the electric machine shafts can also be coupled via the third and the fourth switching element preferably with a common intermediate shaft which extends coaxially to the electric machine shafts.
- the first switching element and the third switching element can be arranged coaxially to the first electric machine shaft and axially parallel to the stub shafts.
- the second switching element and the fourth switching element can be arranged coaxially to the second electric machine shaft and axially parallel to the stub shafts.
- the first and second electric machines may be arranged in the vehicle longitudinal direction with respect to the stub shafts opposite to the axle.
- the two electric machines can preferably be positioned in alignment in the vehicle longitudinal direction in succession and can be arranged substantially in a vehicle half with respect to the vehicle central longitudinal axis.
- the third gear stage may be divided into two spur gear stages, each of which drifts to the axle differential input side.
- a first spur gear via the third switching element with the first electric machine shaft can be coupled.
- a second spur gear can be coupled via the fourth switching element with the second electric machine shaft.
- the two electric machines in longitudinal alignment in a first longitudinal plane
- the third and the fourth switching elements in longitudinal alignment in a second longitudinal plane
- the first switching element and the first translation stage in longitudinal alignment in a third longitudinal plane
- the third translation stage and the axle differential in longitudinal alignment in a fourth longitudinal plane and the second switching element and the second translation stage be arranged in longitudinal alignment in a fifth longitudinal plane.
- each of the electric machine shafts may be divided into an electric machine side shaft portion which cooperates with the rotor of the electric machine and a driven side shaft portion.
- the electric machine-side shaft portion and the output-side shaft portion may be connected to each other via a gear stage, for example via a bevel gear.
- the two electric machines can be aligned together with the electric machine side shaft sections in longitudinal alignment with the vehicle longitudinal direction, while the output-side shaft sections can extend coaxially to each other and in transverse alignment to the vehicle transverse direction.
- the output side shaft portion of the first electric machine shaft may be connected via the first switching element and the first gear ratio drivingly connected to the first flange shaft.
- the output-side shaft portion of the second electric machine shaft can be connected via the second switching element and the second gear ratio drivingly connected to the second flange shaft.
- the electron sinks may be positioned in a coaxial arrangement with the first and second stub shafts.
- the third and the fourth shifting element as well as the axle differential in the vehicle transverse direction may preferably be positioned between the two electric machines.
- the electric machine shafts can be designed in this case as hollow shafts through which the stub shafts are guided to the vehicle outside. At the vehicle outer ends of the two stub shafts can each be followed by the first gear ratio and the second gear stage, which connect the stub shafts respectively with the electric machine shafts - with the interposition of the first and the second switching element.
- Figure 1 shows the outline of an electrically operated motor vehicle from above with highlighted, schematically illustrated vehicle axles; an elevating device for the rear axle of the vehicle according to a first embodiment; a view according to the figure 2 with highlighted drive torque flow with switched first gear ratio; a view corresponding to the figure 2 with highlighted drive torque flow with switched second gear ratio; a view corresponding to Figure 3 with an additional torque shift to the leading to the right vehicle wheel flange.
- FIG. 6 shows a view corresponding to FIG. 2 with a torque
- FIGS. 7 to 10 are views corresponding to FIG. 2 of FIG.
- FIG. 1 shows an electrically operated motor vehicle which has an electrically drivable front axle VA and an electrically drivable rear axle HA.
- the front axle VA is equipped with exactly one electric machine 1, which drives off via a front-axle differential 3 onto the left and right-hand side stirrups 7, 9 leading to the right and left front wheels 5.
- the rear axle HA has a Drive device, in which, in contrast to the front axle VA, each of the rear wheels 15 is assigned in each case an electric machine EM1, EM2.
- the two electric machines EM1, EM2 are arranged in the figure 1 axially parallel to the right and left stub shafts 1 1, 13, which are aligned coaxially with each other and lead to the rear wheels 15 and define their wheel axles.
- the first and the second electric machines EM1, EM2 are positioned with respect to a vehicle center longitudinal plane M in mirror image behind the stub shafts 1 1, 13.
- a first gear stage U1 and a second gear stage U2 and approximately centered an axle differential 17 is positioned.
- the axle differential 17 is designed in common practice so that an equally large drive torque distribution to the first and the second flange 1 1, 13 takes place.
- the drive components installed at the top in the rear axle HA together form a drive device whose transmission structure is explained below with reference to FIG. 2:
- the two electric machines EM1, EM2 each have electric machine shafts 19, 21 which converge in the vehicle transverse direction y.
- the electric machine shaft 19 of the first electric machine EM1 is connected via an overrunning clutch SE1 with a drive gear 23 which forms the first gear ratio U1 together with a driven gear 25 which is arranged fixedly on the first flange shaft 1.
- the electric machine shaft 21 of the second electric machine EM2 via a freewheel clutch SE2 with a drive gear 27 is rotatably connected, which forms the second translation stage U2 (ie spur gear) together with a rotatably mounted on the second flange 13 output gear 29.
- the second translation stage U2 ie spur gear
- both the first and the second electric machine shafts 19, 21 are extended beyond the respective one-way clutch SE1, SE2 to the inside of the vehicle and connected non-rotatably to a clutch housing (that is to say outer disk carrier) of a third and a fourth shifting element SE3, SE4. Both are realized as power shiftable multi-plate clutches.
- the two inner disk carrier of the switching elements SE3 and SE4 are connected to each other via a common intermediate shaft 31, which is arranged coaxially with the two electric machine shafts 19, 21.
- the intermediate shaft 31 rotatably carries an intermediate gear 33, which forms a third gear stage U3 together with an input-side external gear 35 of the axle differential 17.
- the axle differential 17 drives on the output side to the two stub shafts 1 1, 13 (ie half-waves of the rear wheels 15).
- the drive device shown in Figure 2 can be operated in a first and a second gear ratio I, II.
- switched first gear ratio I Figure 3
- a so-called wheel-selective drive in which the two first switching elements SE1, SE2 are connected, that is bridged by the shift claw 37 ( Figure 2) of the freewheel and the electric machine shafts 19, 21 rotatably are connected to the drive gears 23, 27 of the first and second gear ratios U1, U2.
- the third and fourth switching elements SE3, SE4, however, are open. In this case, according to FIG.
- a first torque flow Mi can be transmitted from the first electric machine shaft 19 via the switched first switching element SE1 and the first gear stage U1 to the first flange shaft 11.
- a second torque flow M 2 can be transmitted from the second electric machine shaft 21 via the switched second switching element SE 2 and the second gear stage U 2 to the second flange shaft 13.
- the second gear ratio II is engaged.
- no wheel-selective drive but a so-called differential drive, in which the first and second switching elements SE1, SE2 are open and instead of the third and fourth switching elements SE3, SE4 are closed.
- FIG. 5 shows a driving situation, for example cornering, in which a torque difference is to be achieved between the two stub shafts 1 1, 13.
- the drive device is operated when the first gear ratio I is switched.
- the third switching element SE3 is additionally closed in FIG. 5.
- the drive torque Mi generated by the first electric machine EM1 is divided into a first partial drive torque Mia and second drive torque Mi b .
- the first partial drive torque M 1a is transmitted directly via the first switching element SE1 to the first flange shaft 1 1.
- the second part drive torque Mib is, however, transmitted via the closed third switching element SE3 to the axle differential 17 and there evenly divided on the left and right flanged shaft 1 1, 13.
- a partial drive torque Mi a of, for example, 200 Nm via the first gear ratio U1 would be transmitted to the first flange 1 1 on the first gear ratio U1.
- a second partial drive torque M 1 b of 300 Nm would be transmitted to the third transmission stage U3.
- the second electric machine EM2 continues to transmit its drive torque M E M2 of 500 N m via the second switching element SE2 to the second flange shaft 13. Therefore, on the input side, the axle differential 17 has a torque of 1500 Nm, which is applied uniformly to the two flange shafts 13, 1 1 is distributed. As a result, a drive torque of 2750 Nm is introduced into the first flange shaft 1 1, whereas a drive torque of 5750 Nm is introduced into the second flange shaft 13. Thus, between the two flange shafts 1 1, 13, a torque difference of 3000 Nm, while the total drive torque is 8500 Nm.
- FIG. 6 shows a further driving situation is shown, in which the drive device is operated with switched second gear ratio II and, for example, a cornering, in which between the two stub shafts 1 1, 13 also a moment difference is to be achieved.
- the torque redistribution takes place in that the third switching element SE3 and the second switching element SE2 are switched, while the first switching element SE1 and the fourth switching element SE4 remain open.
- the first electric machine EM1 transmits this via the switched third switching element SE3 Complete drive torque M E MI to the third translation stage U3, so that the input side of the axle differential 1500 Nm abut. These are equally divided in each case to the first and the second flange 1 1, 13 transferred.
- the generated by the second electric machine EM2 drive torque of 100 Nm via the switched second switching element SE1 and the second translation stage U2 is transmitted to the second flange 13, so that in the second flange 13, the applied torque adds up to 1750 Nm, while at the first flange shaft 1 1 abut only 750 N m . This results in a torque difference between the two stub shafts 1 1, 13 of 1000 Nm.
- the drive device in which the first and second electric machines EM1, EM2 in the vehicle longitudinal direction x with respect to the stub shafts 1 1, 13 are arranged opposite to the axis.
- the two electric machines EM1, EM2 are arranged in the vehicle longitudinal direction x in a longitudinal plane in alignment.
- the third transmission stage U3 has two spur gear stages St1, St2, which respectively drive the input-side external gearwheel 35 of the axle differential 17.
- the first spur gear stage St1 which is upper in FIG. 7, is connected to the first gear via the third switching element SE3 Electric machine shaft 19 can be coupled.
- the second spur gear St2 can be coupled via the fourth switching element SE4 to the second electric machine shaft 21.
- the two electric machines EM1, EM2 are arranged in a first longitudinal plane LE1.
- the third and fourth switching elements SE3 and SE4 are arranged in alignment one behind the other in a second longitudinal plane LE2, while the first translation stage U1 are arranged together with the first switching element SE1 in a third longitudinal plane LE3.
- the third gear stage U3 is arranged together with the axle differential 17, while in a fifth longitudinal plane LE5, the second switching element SE2 is arranged together with the second gear stage U2.
- the electric machines EM1 and EM2 are positioned in coaxial arrangement with the first and second stub shafts 11, 13. In the coaxial arrangement shown in FIG.
- the third and fourth switching elements SE3, SE4 and the axle differential 17, which is designed to be space-saving as a spur gear differential, are arranged between the two electric machines EM1, EM2.
- the third and fourth switching element SE3, SE4 is in each case designed as a multi-plate clutch, of which in each case the two outer disk carrier are connected to each other via a common intermediate shaft 31.
- the executed as a ring gear intermediate shaft 31 is coupled to the realized as Stirnraddifferenzial axle differential 17.
- the electric machine shafts 19, 21 are realized as hollow shafts, through which the two stub shafts 1 1, 13 are guided to the vehicle outside.
- the two stub shafts 1 1, 13 are in the vehicle transverse direction y outside the two electric machines EM1, EM2 respectively via the first gear ratio U1 and the second gear stage U2 with the interposition of the first switching element SE1 and the second switching element SE2 connected to the first and second electric machine shaft 19, 21.
- the two electric machines EM1, EM2 are positioned in a longitudinal arrangement, in which the electric machines EM1, EM2 are positioned at right angles to one another axially parallel to the two stub shafts 1 1, 13.
- the third gear stage U3 has (analogous to FIG. 7) two spur gear stages St1, St2 driving away on the axle differential input side, of which the first spur gear stage St1 (arranged on the left side in FIG. 9) via the third gear element SE3 with the first electric machine shaft 19 can be coupled.
- the second spur gear St2 can be coupled via the fourth switching element SE4 to the second electric machine shaft 21.
- the first electric machine shaft 19, the third switching element SE3 and the first switching element SE1 are arranged coaxially in the vehicle longitudinal direction x.
- the second electric machine shaft 21, the fourth switching element SE4 and the second switching element SE2 coaxially arranged in the vehicle longitudinal direction x.
- the first transmission stage U1 and the second transmission stage U2 in the vehicle longitudinal direction x are spaced apart from one another via a construction space in which the third transmission stage U3 is arranged together with the axle differential 17.
- the drive device shown in FIG. 10 is largely identical in design to the drive device shown in FIG. Therefore, reference is made to the functionally and / or structurally identical components which have already been explained with reference to FIG. In contrast to FIG. 2, in FIG.
- the first and second electric machines EM1, EM2 are not arranged coaxially in a transverse alignment in the vehicle transverse direction y. Rather, in FIG. 10, the two electric machines EM1, EM2-as well as in FIG. 9 -are positioned in a longitudinal arrangement in which the two electric machines EM1, EM2 are aligned parallel to one another in the vehicle longitudinal direction x and to the two stub shafts 11 , 13 are positioned at right angles.
- the first electric machine shaft 19 is divided into an electric-machine-side shaft section 41 and a driven-side shaft section 43, which are connected to one another via a first gear stage G1.
- the first gear G1 is realized as a bevel gear.
- the electric machine-side shaft portion 41 cooperates with the rotor of the first electric machine EM1, while the output-side shaft portion 43 is connected via the first one-way clutch SE1 to the output gear 23, which together with the rotatably mounted on the stub shaft 1 1 driven gear 25 the forms first translation stage U1.
- the output side shaft portion 43 of the first electric machine shaft 19 is also extended beyond the first one-way clutch SE1 after vehicle inside and rotatably connected to the clutch housing (that is on the outer disc carrier) of the third switching element SE3.
- the second electric machine shaft 21 is divided into an electric machine side shaft portion 47 and a driven side shaft portion 45, which are connected to each other via a second gear G2, which is also realized as a bevel gear.
- the output-side shaft portion 45 of the second electric machine shaft 21 is connected via the second one-way clutch SE2 to the output gear 27, which forms the second gear stage U2 together with the driven gear 29, arranged non-rotatably on the second flange shaft 13.
- the output side shaft portion 45 of the second Electric machine shaft 21 is displaced beyond the second one-way clutch SE2 in addition to the vehicle inside and rotatably connected to the clutch housing of the fourth switching element SE4.
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Power Engineering (AREA)
- Arrangement And Driving Of Transmission Devices (AREA)
- Retarders (AREA)
- Motor Power Transmission Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016218717.1A DE102016218717B3 (de) | 2016-09-28 | 2016-09-28 | Antriebsvorrichtung für eine Fahrzeugachse, insbesondere Hinterachse |
| PCT/EP2017/068537 WO2018059783A1 (de) | 2016-09-28 | 2017-07-21 | Antriebsvorrichtung für eine fahrzeugachse, insbesondere hinterachse |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3519222A1 true EP3519222A1 (de) | 2019-08-07 |
| EP3519222B1 EP3519222B1 (de) | 2020-11-25 |
Family
ID=59593029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP17751658.0A Not-in-force EP3519222B1 (de) | 2016-09-28 | 2017-07-21 | Antriebsvorrichtung für eine fahrzeugachse, insbesondere hinterachse |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US11192434B2 (de) |
| EP (1) | EP3519222B1 (de) |
| CN (1) | CN109789759B (de) |
| DE (1) | DE102016218717B3 (de) |
| WO (1) | WO2018059783A1 (de) |
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| DE202018103672U1 (de) | 2018-06-27 | 2019-09-30 | Hofer-Pdc Gmbh | Bauraumanordnung eines Kfz-Antriebsstrangs, insbesondere mit zwei Elektromotoren |
| CN109017251A (zh) * | 2018-06-29 | 2018-12-18 | 北京新能源汽车股份有限公司 | 车辆 |
| CN108819690A (zh) * | 2018-06-29 | 2018-11-16 | 北京新能源汽车股份有限公司 | 车辆 |
| USD927578S1 (en) | 2018-09-27 | 2021-08-10 | Allison Transmission, Inc. | Axle assembly |
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| DE102018221603A1 (de) * | 2018-12-13 | 2020-06-18 | Zf Friedrichshafen Ag | Antriebsachse eines elektrisch antreibbaren Fahrzeuges |
| KR102729858B1 (ko) * | 2019-05-03 | 2024-11-13 | 현대자동차주식회사 | 전기차 파워트레인 |
| US11040607B2 (en) * | 2019-07-12 | 2021-06-22 | Allison Transmission, Inc. | Multiple motor multiple speed continuous power transmission |
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| US12109895B1 (en) * | 2020-09-24 | 2024-10-08 | Apple Inc. | Motion system |
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| DE102021200355A1 (de) * | 2021-01-15 | 2022-07-21 | Zf Friedrichshafen Ag | Getriebe und Antriebsvorrichtung für ein zumindest teilweise elektrisch angetriebenes Fahrzeug |
| US11498431B1 (en) * | 2021-07-26 | 2022-11-15 | Rivian Ip Holdings, Llc | Selectable differential drive for a vehicle |
| DE102021004237B4 (de) | 2021-08-19 | 2024-03-28 | Mercedes-Benz Group AG | Elektrisches Antriebssystem für ein Kraftfahrzeug |
| DE102021004236A1 (de) | 2021-08-19 | 2023-02-23 | Mercedes-Benz Group AG | Elektrisches Antriebssystem für ein Kraftfahrzeug |
| CN113910882A (zh) * | 2021-10-18 | 2022-01-11 | 上海蔚兰动力科技有限公司 | 用于汽车的电驱动桥总成及汽车 |
| DE102021132409B4 (de) | 2021-12-09 | 2023-11-23 | Schaeffler Technologies AG & Co. KG | Elektrischer Antrieb eines Fahrzeuges |
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| DE102021133268A1 (de) | 2021-12-15 | 2023-06-15 | Schaeffler Technologies AG & Co. KG | Elektrischer Antrieb eines Fahrzeuges |
| AT525812B1 (de) | 2022-04-19 | 2023-08-15 | Avl List Gmbh | Elektrische antriebsachse |
| CN114714874B (zh) * | 2022-04-29 | 2025-06-17 | 无锡星驱动力科技有限公司 | 一种双电机电驱总成和车辆 |
| DE102022205958A1 (de) * | 2022-06-13 | 2023-12-14 | Rheinmetall Landsysteme Gmbh | Elektrisch antreibbare Antriebsachse für ein geländegängiges Nutzfahrzeug und Nutzfahrzeug |
| DE102022118690A1 (de) * | 2022-07-26 | 2024-02-01 | Bayerische Motoren Werke Aktiengesellschaft | Getriebeeinheit für eine Antriebseinheit für ein Kraftfahrzeug, Antriebseinheit und Kraftfahrzeug |
| DE102022003150A1 (de) | 2022-08-29 | 2024-02-29 | Mercedes-Benz Group AG | Elektrisches Antriebssystem und Verfahren zu dessen Betrieb |
| DE102022209064A1 (de) * | 2022-08-31 | 2024-02-29 | Zf Friedrichshafen Ag | Antriebsvorrichtung für ein Kraftfahrzeug sowie Kraftfahrzeug |
| DE102022209065A1 (de) * | 2022-08-31 | 2024-02-29 | Zf Friedrichshafen Ag | Antriebsvorrichtung für ein Kraftfahrzeug sowie Kraftfahrzeug |
| DE102022209063A1 (de) * | 2022-08-31 | 2024-02-29 | Zf Friedrichshafen Ag | Antriebsvorrichtung für ein Kraftfahrzeug sowie Kraftfahrzeug |
| CN115593207A (zh) * | 2022-11-11 | 2023-01-13 | 山东华星精密机械有限公司(Cn) | 一种矿用卡车用双电机三级三中间轴传动轮边电驱动桥 |
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| DE102023003067B4 (de) * | 2023-07-26 | 2025-07-31 | Mercedes-Benz Group AG | Verfahren zum Betreiben eines elektrischen Antriebssystems für ein Kraftfahrzeug, insbesondere für einen Kraftwagen |
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| DE102006057857B4 (de) | 2006-12-08 | 2016-04-21 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Vorrichtung und Verfahren zum Betrieb eines Kraftfahrzeuges mit mehreren Antriebseinheiten |
| DE102010004228A1 (de) * | 2010-01-09 | 2011-07-14 | IAV GmbH Ingenieurgesellschaft Auto und Verkehr, 10587 | Vorrichtung zum Antrieb eines Fahrzeuges |
| DE102010005789A1 (de) * | 2010-01-25 | 2011-07-28 | IAV GmbH Ingenieurgesellschaft Auto und Verkehr, 10587 | Vorrichtung zum Antrieb eines Fahrzeuges |
| JP5019080B2 (ja) * | 2010-09-03 | 2012-09-05 | 本田技研工業株式会社 | 自動車用駆動システム及びその制御方法 |
| DE102011004410A1 (de) * | 2011-02-18 | 2012-08-23 | Schaeffler Technologies Gmbh & Co. Kg | Hybridantriebseinheit für ein Kraftfahrzeug |
| DE102011086062A1 (de) * | 2011-11-10 | 2013-05-16 | Bayerische Motoren Werke Aktiengesellschaft | Elektrifizierte Antriebsanordnung für ein Hybridfahrzeug |
| DE102011056046B4 (de) | 2011-12-05 | 2022-05-25 | Dr.Ing.H.C.F.Porsche Aktiengesellschaft | Antriebsstrang eines rein elektrisch allradbetreibbaren Kraftfahrzeuges |
| DE102011088648B4 (de) | 2011-12-15 | 2016-07-28 | Schaeffler Technologies AG & Co. KG | Elektromechanische Antriebseinrichtung für ein Kraftfahrzeug |
| DE102011056929B4 (de) * | 2011-12-22 | 2026-02-05 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Antriebsstrang eines rein elektrisch antreibbaren Kraftfahrzeugs mit zwei Elektromaschinen |
| DE102015008153A1 (de) | 2015-06-24 | 2016-01-21 | Daimler Ag | Antriebseinrichtung für einen Kraftwagen |
| CN105480069B (zh) | 2015-12-30 | 2018-07-31 | 北京新能源汽车股份有限公司 | 动力系统以及具有其的车辆 |
| CN109017251A (zh) * | 2018-06-29 | 2018-12-18 | 北京新能源汽车股份有限公司 | 车辆 |
-
2016
- 2016-09-28 DE DE102016218717.1A patent/DE102016218717B3/de not_active Expired - Fee Related
-
2017
- 2017-07-21 US US16/337,438 patent/US11192434B2/en not_active Expired - Fee Related
- 2017-07-21 WO PCT/EP2017/068537 patent/WO2018059783A1/de not_active Ceased
- 2017-07-21 CN CN201780059753.1A patent/CN109789759B/zh active Active
- 2017-07-21 EP EP17751658.0A patent/EP3519222B1/de not_active Not-in-force
Also Published As
| Publication number | Publication date |
|---|---|
| US20190283574A1 (en) | 2019-09-19 |
| CN109789759B (zh) | 2022-04-19 |
| EP3519222B1 (de) | 2020-11-25 |
| CN109789759A (zh) | 2019-05-21 |
| US11192434B2 (en) | 2021-12-07 |
| DE102016218717B3 (de) | 2018-02-22 |
| WO2018059783A1 (de) | 2018-04-05 |
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